Agenda

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C. 2

To:	Board of Supervisors
From:	Brian M. Balbas, Public Works Director/Chief Engineer
Date:	March 30, 2021

Contra

Costa

County

Subject:

Consulting Services Agreement with PreScience Corporation, Concord area.

APPROVE	OTHER
RECOMMENDATION OF CNTY ADMINISTRATOR	RECOMMENDATION OF BOARD COMMITTEE

Action of Board On: 03/30/2021

APPROVED AS RECOMMENDED

OTHER

Clerks Notes:

VOTE OF SUPERVISORS

AYE:

John Gioia, District I Supervisor
Candace Andersen, District II Supervisor
Diane Burgis, District III Supervisor
Karen Mitchoff, District IV Supervisor
Federal D. Glover, District V Supervisor

Contact:

Kevin Emigh, 925.313.2233

I hereby certify that this is a true and correct copy of an action taken and entered on the minutes of the Board of Supervisors on the date shown.
ATTESTED: March 30, 2021
Monica Nino, County Administrator

BY:	, Deputy

RECOMMENDATION(S):

APPROVE and AUTHORIZE the Public Works Director, or designee, to execute a contract (Consulting Services Agreement) with PreScience Corporation (PreScience), in an amount not to exceed $1,581,016.64, for construction management services for the Marsh Drive Bridge Replacement Project (Project), for the period March 30, 2021 to June 30, 2023, in the Concord area. County Project No.: 0662-6R4119, Federal Project No.: BRLS 5928(128) (District IV and V)

FISCAL IMPACT:

This project, including this Consulting Services Agreement, will be funded by 88.53% Federal Highway Bridge Program Funds and 11.47% Local Road Funds.

BACKGROUND:

The Project consists of removing the existing bridge on Marsh Drive over Walnut Creek (State Bridge No. 28C-0442), which is seismically, structurally, and hydraulically deficient, and construct a new concrete bridge in stages to current standard, reconstructing the roadway approaches from both ends of the bridge, constructing a new separated walking path on the south side of the bridge that will connect to the existing Iron Horse Trail, and incorporating drainage improvements, utility work, erosion control work, and roadway signing and striping.

PreScience was selected to provide construction management services for the Project after completing a request for proposal solicitation and technical proposal process. Construction management services for the Project includes full-time inspection, quality assurance materials testing, quality assurance surveying, extensive coordination with project stakeholders including Caltrans, Contra Costa Water District, City of Concord, and the East Bay Regional Park District, and in-field decision making to ensure the Project is built per plans and specifications and meets County, City, and Caltrans Standards. Construction management services also include recording daily activity and equipment on-site and maintaining required project documentation. Public Works has successfully negotiated with PreScience to provide the construction management services.

CONSEQUENCE OF NEGATIVE ACTION:

Without Board of Supervisors’ approval, this Consulting Services Agreement will not be in effect. A delay in construction of the Project will occur, ultimately delaying the completion of the Project. Project delay may also result in substantial additional project costs and jeopardize the funding.